Example usage for java.awt AlphaComposite getInstance

List of usage examples for java.awt AlphaComposite getInstance

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Introduction

In this page you can find the example usage for java.awt AlphaComposite getInstance.

Prototype

public static AlphaComposite getInstance(int rule, float alpha)

Source Link

Document

Creates an AlphaComposite object with the specified rule and the constant alpha to multiply with the alpha of the source.

Usage

From source file:net.technicpack.ui.lang.ResourceLoader.java

public BufferedImage colorImage(BufferedImage loadImg, Color color) {
    BufferedImage img = new BufferedImage(loadImg.getWidth(), loadImg.getHeight(), BufferedImage.TRANSLUCENT);
    Graphics2D graphics = img.createGraphics();

    graphics.setColor(color);//from   w w  w  . ja va 2s . c  o m
    graphics.drawImage(loadImg, null, 0, 0);
    graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_IN, 1.0f));
    graphics.fillRect(0, 0, loadImg.getWidth(), loadImg.getHeight());

    graphics.dispose();
    return img;
}

From source file:de.fhg.igd.mapviewer.server.wms.overlay.WMSTileOverlay.java

/**
 * @see AbstractTileOverlayPainter#repaintTile(int, int, int, int,
 *      PixelConverter, int)/*from  w  w w  .  ja  va  2  s . c om*/
 */
@Override
public BufferedImage repaintTile(int posX, int posY, int width, int height, PixelConverter converter,
        int zoom) {
    // the first converter isn't regarded as a new converter because it's
    // always the empty map
    boolean isNewConverter = lastConverter != null && !converter.equals(lastConverter);
    lastConverter = converter;

    if (!converter.supportsBoundingBoxes()) {
        if (isNewConverter) {
            handleError(Messages.WMSTileOverlay_0 + configuration.getName() + Messages.WMSTileOverlay_1);
        }
        return null;
    }

    synchronized (this) {
        if (capabilities == null) {
            try {
                capabilities = WMSUtil.getCapabilities(configuration.getBaseUrl());
            } catch (WMSCapabilitiesException e) {
                log.error("Error getting WMS capabilities"); //$NON-NLS-1$
            }
        }
    }

    if (capabilities != null) {
        int mapEpsg = converter.getMapEpsg();

        WMSBounds box;
        synchronized (this) {
            if (capabilities.getSupportedSRS().contains("EPSG:" + mapEpsg)) { //$NON-NLS-1$
                // same SRS supported
            } else {
                // SRS not supported
                if (isNewConverter) {
                    StringBuilder message = new StringBuilder();
                    message.append(Messages.WMSTileOverlay_2);
                    message.append(configuration.getName());
                    message.append(Messages.WMSTileOverlay_3);
                    boolean init = true;
                    for (String srs : capabilities.getSupportedSRS()) {
                        if (init) {
                            init = false;
                        } else {
                            message.append(", "); //$NON-NLS-1$
                        }
                        message.append(srs);
                    }
                    handleError(message.toString());
                }
                return null;
            }

            box = WMSUtil.getBoundingBox(capabilities, mapEpsg);
        }

        String srs = box.getSRS();

        if (srs.startsWith("EPSG:")) { //$NON-NLS-1$
            // determine format
            String format = null;
            Iterator<String> itFormat = supportedFormats.iterator();
            synchronized (this) {
                while (format == null && itFormat.hasNext()) {
                    String supp = itFormat.next();
                    if (capabilities.getFormats().contains(supp)) {
                        format = supp;
                    }
                }
            }
            if (format == null) {
                // no compatible format
                return null;
            }

            try {
                // check if tile lies within the bounding box
                int epsg = Integer.parseInt(srs.substring(5));

                GeoPosition topLeft = converter.pixelToGeo(new Point(posX, posY), zoom);
                GeoPosition bottomRight = converter.pixelToGeo(new Point(posX + width, posY + height), zoom);

                // WMS bounding box
                BoundingBox wms = new BoundingBox(box.getMinX(), box.getMinY(), -1, box.getMaxX(),
                        box.getMaxY(), 1);

                GeoConverter geotools = GeotoolsConverter.getInstance();
                GeoPosition bbTopLeft = geotools.convert(topLeft, epsg);
                GeoPosition bbBottomRight = geotools.convert(bottomRight, epsg);

                double minX = Math.min(bbTopLeft.getX(), bbBottomRight.getX());
                double minY = Math.min(bbTopLeft.getY(), bbBottomRight.getY());
                double maxX = Math.max(bbTopLeft.getX(), bbBottomRight.getX());
                double maxY = Math.max(bbTopLeft.getY(), bbBottomRight.getY());

                BoundingBox tile = new BoundingBox(minX, minY, -1, maxX, maxY, 1);

                // check if bounding box and tile overlap
                if (wms.intersectsOrCovers(tile) || tile.covers(wms)) {
                    WMSBounds bounds;
                    if (epsg == mapEpsg) {
                        bounds = new WMSBounds(srs, minX, minY, maxX, maxY);
                    } else {
                        // determine bounds for request
                        minX = Math.min(topLeft.getX(), bottomRight.getX());
                        minY = Math.min(topLeft.getY(), bottomRight.getY());
                        maxX = Math.max(topLeft.getX(), bottomRight.getX());
                        maxY = Math.max(topLeft.getY(), bottomRight.getY());
                        bounds = new WMSBounds("EPSG:" + mapEpsg, minX, minY, maxX, maxY); //$NON-NLS-1$
                    }

                    URI uri;
                    synchronized (this) {
                        uri = WMSUtil.getMapURI(capabilities, configuration, width, height, bounds, null,
                                format, true);
                    }

                    Proxy proxy = ProxyUtil.findProxy(uri);

                    InputStream in = uri.toURL().openConnection(proxy).getInputStream();

                    BufferedImage image = GraphicsUtilities.loadCompatibleImage(in);

                    // apply transparency to the image
                    BufferedImage result = GraphicsUtilities.createCompatibleTranslucentImage(image.getWidth(),
                            image.getHeight());
                    Graphics2D g = result.createGraphics();
                    try {
                        AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC, 0.5f);
                        g.setComposite(ac);
                        g.drawImage(image, 0, 0, null);
                    } finally {
                        g.dispose();
                    }

                    return result;
                }
            } catch (Throwable e) {
                log.warn("Error painting WMS overlay", e); //$NON-NLS-1$
            }
        }
    }

    return null;
}

From source file:com.controlj.addon.gwttree.server.OpaqueBarRenderer3D.java

@Override
public void drawBackground(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea) {

    float x0 = (float) dataArea.getX();
    float x1 = x0 + (float) Math.abs(getXOffset());
    float x3 = (float) dataArea.getMaxX();
    float x2 = x3 - (float) Math.abs(getXOffset());

    float y0 = (float) dataArea.getMaxY();
    float y1 = y0 - (float) Math.abs(getYOffset());
    float y3 = (float) dataArea.getMinY();
    float y2 = y3 + (float) Math.abs(getYOffset());

    GeneralPath clip = new GeneralPath();
    clip.moveTo(x0, y0);/*  www.jav  a 2  s  .  c  o  m*/
    clip.lineTo(x0, y2);
    clip.lineTo(x1, y3);
    clip.lineTo(x3, y3);
    clip.lineTo(x3, y1);
    clip.lineTo(x2, y0);
    clip.closePath();

    Composite originalComposite = g2.getComposite();
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, plot.getBackgroundAlpha()));

    // fill background...
    Paint backgroundPaint = plot.getBackgroundPaint();
    if (backgroundPaint != null) {
        g2.setPaint(backgroundPaint);
        g2.fill(clip);
    }

    GeneralPath bottomWall = new GeneralPath();
    bottomWall.moveTo(x0, y0);
    bottomWall.lineTo(x1, y1);
    bottomWall.lineTo(x3, y1);
    bottomWall.lineTo(x2, y0);
    bottomWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(bottomWall);

    // draw background image, if there is one...
    Image backgroundImage = plot.getBackgroundImage();
    if (backgroundImage != null) {
        Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX() + getXOffset(), dataArea.getY(),
                dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset());
        plot.drawBackgroundImage(g2, adjusted);
    }

    g2.setComposite(originalComposite);

}

From source file:net.groupbuy.util.ImageUtils.java

/**
 * ?//ww w  .  j  ava2  s .  c  om
 * 
 * @param srcFile
 *            ?
 * @param destFile
 *            
 * @param watermarkFile
 *            ?
 * @param watermarkPosition
 *            ??
 * @param alpha
 *            ??
 */
public static void addWatermark(File srcFile, File destFile, File watermarkFile,
        WatermarkPosition watermarkPosition, int alpha) {
    Assert.notNull(srcFile);
    Assert.notNull(destFile);
    Assert.state(alpha >= 0);
    Assert.state(alpha <= 100);
    if (watermarkFile == null || !watermarkFile.exists() || watermarkPosition == null
            || watermarkPosition == WatermarkPosition.no) {
        try {
            FileUtils.copyFile(srcFile, destFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return;
    }
    if (type == Type.jdk) {
        Graphics2D graphics2D = null;
        ImageOutputStream imageOutputStream = null;
        ImageWriter imageWriter = null;
        try {
            BufferedImage srcBufferedImage = ImageIO.read(srcFile);
            int srcWidth = srcBufferedImage.getWidth();
            int srcHeight = srcBufferedImage.getHeight();
            BufferedImage destBufferedImage = new BufferedImage(srcWidth, srcHeight,
                    BufferedImage.TYPE_INT_RGB);
            graphics2D = destBufferedImage.createGraphics();
            graphics2D.setBackground(BACKGROUND_COLOR);
            graphics2D.clearRect(0, 0, srcWidth, srcHeight);
            graphics2D.drawImage(srcBufferedImage, 0, 0, null);
            graphics2D.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha / 100F));

            BufferedImage watermarkBufferedImage = ImageIO.read(watermarkFile);
            int watermarkImageWidth = watermarkBufferedImage.getWidth();
            int watermarkImageHeight = watermarkBufferedImage.getHeight();
            int x = srcWidth - watermarkImageWidth;
            int y = srcHeight - watermarkImageHeight;
            if (watermarkPosition == WatermarkPosition.topLeft) {
                x = 0;
                y = 0;
            } else if (watermarkPosition == WatermarkPosition.topRight) {
                x = srcWidth - watermarkImageWidth;
                y = 0;
            } else if (watermarkPosition == WatermarkPosition.center) {
                x = (srcWidth - watermarkImageWidth) / 2;
                y = (srcHeight - watermarkImageHeight) / 2;
            } else if (watermarkPosition == WatermarkPosition.bottomLeft) {
                x = 0;
                y = srcHeight - watermarkImageHeight;
            } else if (watermarkPosition == WatermarkPosition.bottomRight) {
                x = srcWidth - watermarkImageWidth;
                y = srcHeight - watermarkImageHeight;
            }
            graphics2D.drawImage(watermarkBufferedImage, x, y, watermarkImageWidth, watermarkImageHeight, null);

            imageOutputStream = ImageIO.createImageOutputStream(destFile);
            imageWriter = ImageIO.getImageWritersByFormatName(FilenameUtils.getExtension(destFile.getName()))
                    .next();
            imageWriter.setOutput(imageOutputStream);
            ImageWriteParam imageWriteParam = imageWriter.getDefaultWriteParam();
            imageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            imageWriteParam.setCompressionQuality(DEST_QUALITY / 100F);
            imageWriter.write(null, new IIOImage(destBufferedImage, null, null), imageWriteParam);
            imageOutputStream.flush();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (graphics2D != null) {
                graphics2D.dispose();
            }
            if (imageWriter != null) {
                imageWriter.dispose();
            }
            if (imageOutputStream != null) {
                try {
                    imageOutputStream.close();
                } catch (IOException e) {
                }
            }
        }
    } else {
        String gravity = "SouthEast";
        if (watermarkPosition == WatermarkPosition.topLeft) {
            gravity = "NorthWest";
        } else if (watermarkPosition == WatermarkPosition.topRight) {
            gravity = "NorthEast";
        } else if (watermarkPosition == WatermarkPosition.center) {
            gravity = "Center";
        } else if (watermarkPosition == WatermarkPosition.bottomLeft) {
            gravity = "SouthWest";
        } else if (watermarkPosition == WatermarkPosition.bottomRight) {
            gravity = "SouthEast";
        }
        IMOperation operation = new IMOperation();
        operation.gravity(gravity);
        operation.dissolve(alpha);
        operation.quality((double) DEST_QUALITY);
        operation.addImage(watermarkFile.getPath());
        operation.addImage(srcFile.getPath());
        operation.addImage(destFile.getPath());
        if (type == Type.graphicsMagick) {
            CompositeCmd compositeCmd = new CompositeCmd(true);
            if (graphicsMagickPath != null) {
                compositeCmd.setSearchPath(graphicsMagickPath);
            }
            try {
                compositeCmd.run(operation);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (IM4JavaException e) {
                e.printStackTrace();
            }
        } else {
            CompositeCmd compositeCmd = new CompositeCmd(false);
            if (imageMagickPath != null) {
                compositeCmd.setSearchPath(imageMagickPath);
            }
            try {
                compositeCmd.run(operation);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (IM4JavaException e) {
                e.printStackTrace();
            }
        }
    }
}

From source file:com.openkm.module.direct.DirectWorkflowModule.java

@Override
public byte[] getProcessDefinitionImage(String token, long processDefinitionId, String node)
        throws RepositoryException, DatabaseException, WorkflowException {
    log.debug("getProcessDefinitionImage({}, {}, {})", new Object[] { token, processDefinitionId, node });
    JbpmContext jbpmContext = JBPMUtils.getConfig().createJbpmContext();
    byte[] image = null;
    Session session = null;//from  w ww . j a v a2s. c  om

    try {
        if (token == null) {
            session = JCRUtils.getSession();
        } else {
            session = JcrSessionManager.getInstance().get(token);
        }

        GraphSession graphSession = jbpmContext.getGraphSession();
        org.jbpm.graph.def.ProcessDefinition pd = graphSession.getProcessDefinition(processDefinitionId);
        FileDefinition fileDef = pd.getFileDefinition();

        WorkflowUtils.DiagramInfo dInfo = WorkflowUtils.getDiagramInfo(fileDef.getInputStream("gpd.xml"));
        WorkflowUtils.DiagramNodeInfo dNodeInfo = dInfo.getNodeMap().get(node);
        BufferedImage img = ImageIO.read(fileDef.getInputStream("processimage.jpg"));

        // Obtain all nodes Y
        List<Integer> ordenadas = new ArrayList<Integer>();

        for (WorkflowUtils.DiagramNodeInfo nodeInfo : dInfo.getNodeMap().values()) {
            ordenadas.add(nodeInfo.getY());
        }

        // Calculate minimal Y
        Collections.sort(ordenadas);
        int fix = ordenadas.get(0);

        if (dNodeInfo != null) {
            // Select node
            log.debug("DiagramNodeInfo: {}", dNodeInfo);
            Graphics g = img.getGraphics();
            Graphics2D g2d = (Graphics2D) g;
            g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.25F));
            g2d.setColor(Color.blue);
            g2d.fillRect(dNodeInfo.getX(), dNodeInfo.getY() - fix, dNodeInfo.getWidth(), dNodeInfo.getHeight());
            g.dispose();
        }

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(img, "jpg", baos);
        image = baos.toByteArray();
        baos.flush();
        baos.close();

        // Activity log
        UserActivity.log(session.getUserID(), "GET_PROCESS_DEFINITION_IMAGE", "" + processDefinitionId, null);
    } catch (javax.jcr.RepositoryException e) {
        throw new RepositoryException(e.getMessage(), e);
    } catch (JbpmException e) {
        throw new WorkflowException(e.getMessage(), e);
    } catch (IOException e) {
        throw new WorkflowException(e.getMessage(), e);
    } finally {
        if (token == null)
            JCRUtils.logout(session);
        jbpmContext.close();
    }

    log.debug("getProcessDefinitionImage: {}", image);
    return image;
}

From source file:nl.b3p.kaartenbalie.service.KBImageTool.java

/** Combines GIF, TIFF or PNG images. Combining these images is different from the JPG image types since these
 * has to use an other imageType: BufferedImage.TYPE_INT_ARGB_PRE.
 *
 * @param images BufferedImage array with the images tha have to be combined.
 *
 * @return BufferedImage//from   w w w .  j  a v a2s  . c  o  m
 */
// <editor-fold defaultstate="" desc="combineOtherImages(BufferedImage [] images) method.">
private static BufferedImage combineOtherImages(BufferedImage[] images) {
    int width = images[0].getWidth();
    int height = images[0].getHeight();

    BufferedImage newBufIm = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB_PRE);
    Graphics2D gbi = newBufIm.createGraphics();

    gbi.drawImage(images[0], 0, 0, null);
    gbi.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_OVER, 1.0f));

    for (int i = 1; i < images.length; i++) {
        gbi.drawImage(images[i], 0, 0, null);
    }
    return newBufIm;
}

From source file:com.el.ecom.utils.ImageUtils.java

/**
 * ?//from   w  w w. j  av a 2s .co m
 * 
 * @param srcFile ?
 * @param destFile 
 * @param watermarkFile ?
 * @param watermarkPosition ??
 * @param alpha ??
 */
public static void addWatermark(File srcFile, File destFile, File watermarkFile,
        WatermarkPosition watermarkPosition, int alpha) {
    Assert.notNull(srcFile);
    Assert.state(srcFile.exists());
    Assert.state(srcFile.isFile());
    Assert.notNull(destFile);
    Assert.state(alpha >= 0);
    Assert.state(alpha <= 100);

    if (watermarkFile == null || !watermarkFile.exists() || !watermarkFile.isFile() || watermarkPosition == null
            || watermarkPosition == WatermarkPosition.no) {
        try {
            if (!StringUtils.equals(srcFile.getCanonicalPath(), destFile.getCanonicalPath())) {
                FileUtils.copyFile(srcFile, destFile);
            }
        } catch (IOException e) {
            throw new RuntimeException(e.getMessage(), e);
        }
        return;
    }
    if (type == Type.jdk) {
        Graphics2D graphics2D = null;
        ImageOutputStream imageOutputStream = null;
        ImageWriter imageWriter = null;
        try {
            BufferedImage srcBufferedImage = ImageIO.read(srcFile);
            int srcWidth = srcBufferedImage.getWidth();
            int srcHeight = srcBufferedImage.getHeight();
            BufferedImage destBufferedImage = new BufferedImage(srcWidth, srcHeight,
                    BufferedImage.TYPE_INT_RGB);
            graphics2D = destBufferedImage.createGraphics();
            graphics2D.setBackground(BACKGROUND_COLOR);
            graphics2D.clearRect(0, 0, srcWidth, srcHeight);
            graphics2D.drawImage(srcBufferedImage, 0, 0, null);
            graphics2D.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha / 100F));

            BufferedImage watermarkBufferedImage = ImageIO.read(watermarkFile);
            int watermarkImageWidth = watermarkBufferedImage.getWidth();
            int watermarkImageHeight = watermarkBufferedImage.getHeight();
            int x = srcWidth - watermarkImageWidth;
            int y = srcHeight - watermarkImageHeight;
            if (watermarkPosition == WatermarkPosition.topLeft) {
                x = 0;
                y = 0;
            } else if (watermarkPosition == WatermarkPosition.topRight) {
                x = srcWidth - watermarkImageWidth;
                y = 0;
            } else if (watermarkPosition == WatermarkPosition.center) {
                x = (srcWidth - watermarkImageWidth) / 2;
                y = (srcHeight - watermarkImageHeight) / 2;
            } else if (watermarkPosition == WatermarkPosition.bottomLeft) {
                x = 0;
                y = srcHeight - watermarkImageHeight;
            } else if (watermarkPosition == WatermarkPosition.bottomRight) {
                x = srcWidth - watermarkImageWidth;
                y = srcHeight - watermarkImageHeight;
            }
            graphics2D.drawImage(watermarkBufferedImage, x, y, watermarkImageWidth, watermarkImageHeight, null);

            imageOutputStream = ImageIO.createImageOutputStream(destFile);
            imageWriter = ImageIO.getImageWritersByFormatName(FilenameUtils.getExtension(destFile.getName()))
                    .next();
            imageWriter.setOutput(imageOutputStream);
            ImageWriteParam imageWriteParam = imageWriter.getDefaultWriteParam();
            imageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            imageWriteParam.setCompressionQuality(DEST_QUALITY / 100F);
            imageWriter.write(null, new IIOImage(destBufferedImage, null, null), imageWriteParam);
            imageOutputStream.flush();
        } catch (IOException e) {
            throw new RuntimeException(e.getMessage(), e);
        } finally {
            if (graphics2D != null) {
                graphics2D.dispose();
            }
            if (imageWriter != null) {
                imageWriter.dispose();
            }
            try {
                if (imageOutputStream != null) {
                    imageOutputStream.close();
                }
            } catch (IOException e) {
            }
        }
    } else {
        String gravity = "SouthEast";
        if (watermarkPosition == WatermarkPosition.topLeft) {
            gravity = "NorthWest";
        } else if (watermarkPosition == WatermarkPosition.topRight) {
            gravity = "NorthEast";
        } else if (watermarkPosition == WatermarkPosition.center) {
            gravity = "Center";
        } else if (watermarkPosition == WatermarkPosition.bottomLeft) {
            gravity = "SouthWest";
        } else if (watermarkPosition == WatermarkPosition.bottomRight) {
            gravity = "SouthEast";
        }
        IMOperation operation = new IMOperation();
        operation.gravity(gravity);
        operation.dissolve(alpha);
        operation.quality((double) DEST_QUALITY);
        try {
            operation.addImage(watermarkFile.getCanonicalPath());
            operation.addImage(srcFile.getCanonicalPath());
            operation.addImage(destFile.getCanonicalPath());
        } catch (IOException e) {
            throw new RuntimeException(e.getMessage(), e);
        }
        if (type == Type.graphicsMagick) {
            CompositeCmd compositeCmd = new CompositeCmd(true);
            if (graphicsMagickPath != null) {
                compositeCmd.setSearchPath(graphicsMagickPath);
            }
            try {
                compositeCmd.run(operation);
            } catch (IOException e) {
                throw new RuntimeException(e.getMessage(), e);
            } catch (InterruptedException e) {
                throw new RuntimeException(e.getMessage(), e);
            } catch (IM4JavaException e) {
                throw new RuntimeException(e.getMessage(), e);
            }
        } else {
            CompositeCmd compositeCmd = new CompositeCmd(false);
            if (imageMagickPath != null) {
                compositeCmd.setSearchPath(imageMagickPath);
            }
            try {
                compositeCmd.run(operation);
            } catch (IOException e) {
                throw new RuntimeException(e.getMessage(), e);
            } catch (InterruptedException e) {
                throw new RuntimeException(e.getMessage(), e);
            } catch (IM4JavaException e) {
                throw new RuntimeException(e.getMessage(), e);
            }
        }
    }
}

From source file:net.sourceforge.processdash.ui.lib.chart.DiscPlot.java

@Override
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor, PlotState parentState,
        PlotRenderingInfo info) {// w w w . j  a v  a2 s. c  om

    // adjust for insets...
    RectangleInsets insets = getInsets();
    insets.trim(area);

    if (info != null) {
        info.setPlotArea(area);
        info.setDataArea(area);
    }

    drawBackground(g2, area);
    drawOutline(g2, area);

    Shape savedClip = g2.getClip();
    g2.clip(area);

    Composite originalComposite = g2.getComposite();
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getForegroundAlpha()));

    if (!getDiscDistributor().isDatasetEmpty()) {
        Rectangle2D dataArea = getDataArea(area);
        drawDiscs(g2, dataArea, info);
        drawLegendAxis(g2, dataArea, info);
    } else {
        drawNoDataMessage(g2, area);
    }

    g2.setClip(savedClip);
    g2.setComposite(originalComposite);

    drawOutline(g2, area);
}

From source file:dbseer.gui.panel.DBSeerExplainChartPanel.java

@Override
public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g;

    selectRectangle = new Rectangle2D.Double(x, y, width, height);
    g2d.setPaint(Color.black);//from   ww  w  .j a  va 2s  . c  o m
    Composite c = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .4f);
    g2d.setComposite(c);
    g2d.fill(selectRectangle);
}